Long-standing untreated hypertension most commonly produces which EKG-related change?

Giải thích

Chronic high blood pressure forces the left ventricle to work against increased resistance, so the muscle thickens and generates larger voltage, appearing as tall R waves in the left-sided leads and deep S waves in V1 and V2. Absent P waves indicate atrial fibrillation or a junctional rhythm. A QT under 0.20 second is not a hypertension finding, and pacemaker spikes come from an implanted device.